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Epacris Study Group ASSOCIATION OF SOCIETIES FOR GROWING AUSTRALIAN PLANTS Inc. EPACRIS STUDY GROUP Group Leader: Gwen Elliot, P.O. Box 655 Heathmont Vic. 3135 No. S (ISSN 1038-6017) October f999 Greetings to all EPACRIS STUDY GROUP meders. Many have visited Queensland this year to attend the 20th Biennial ASGAP Conference in Brisbana and I regret that I was not able to be there. Congratulations toJan Sked of Queensland who has now taken over the task of ASGAP Study Group Co-ordinator, and thanks also to Helen Morrow, who has occupied this position in recent years. Rodger and I have been travelling in Europe and USA and we were able to see many Australian plants, in Botanic Gardens, private gardens and in nurseries. One of the highlights of our time away was to visit the garden of Epacvis Study Group member, Jeff Irons and his wife Betty, at Wirral in England. While there we attended a meeting of the AuFtralasian Plant Saciety which was held at the Ness Botanic Garden where we also saw many Australian plants in cultivation. ~effhas sent two separate items for our Newsletter, which we are delighted to be able to include. He has also sent a page on Vegetative Propagation which will be held for our ne& Newsletter. Special thanks to Study Group Member, Bill. Gunn of Ocean Grove Vic, who has very kindly supplied several Epacris illustrations for our Newsletters, including the delightful Epacris longiflora which has been used in the Species Profile in this issue. Bill atso makes mention of mycorrhizal association in regard to Epacris and their cultivation, which is a topic I hope we may be able to look at in one of our Newsletters next year. Any contributions from members on this aspect will be particularly welcome. Bill has inctuded the following item which is very much appreciated. "WHAT DETERMINES THAT AN EPACRIS IS AN EPACRIS ? The Epacris are erect or spreading shrubs. Most are less than 2.5 m high, but there are exceptions, eg. E. heteronema and E. coriacea.. The crowded leaves are alternate, arranged in a spiral.They are lanceotate, ovate or cordate, up to 1.5 cm long, and almost all end in a hard, sharp point. They have no stalk or a very short stalk and they have a prominent mid-rib on their under-surface. The flowers are white, pink or red. They are single and axillary, arising in the angle between the upper surface of a leaf and the stem to which the leaf is attached. The flower stalk is short or very short. Each flower has five (5) petals, which are fused to form a tube or a bell and shows five (5) corolla lobes. Each flower has five (5) sepals, which are free, not fused. Each flower has five (5) stamens which are separate, but become attached to their corresponding petal inside the tube or bell at its base. Each flower has five (5) carpels, which are fused to form the single style. The ovary is 'superior', i.e. it is above the point at which the flower parts join the flower stalk. A transverse section, cut through the ovary, shows five (5) chambem or loculi. Each chamber of loculus contains five (5) ovules, which contain the egg-cells and, after fertilisation, become seeds. " ~embemmay perhaps have heard of the proposal to incorporate the Epacridaceae family within the Ericaceae family, and this is a topic which we will look at in more detail in our March 2000 Newsletter. I trust you enjoy the contents uf this issue, and will welcome all contributions to future Newsletters. PAGE 2 NEWS AND NOTES FROM MEMBERS We welcome to our study group TRICIA ALLEN of McCrae Vic, HELEN DUNN of Hawthorn Vic, MARGARET GUENZEL of Boronia Vic, MAX McDOWALt, from Bulleen Vic., KAREN RUSSELL of Blackburn Vic, ANNE fi DAVID REES of Mirboo North Vic. Welcome also to ROSEY HAAS who is involved with the ST. KILDA INDIGENOUS NURSERY, Victoria (Ph/Fax 03) 9645 2477). This is a small co-operative nursery growing indigenous plants including the local Epacris impressq which is propagated from - cuttings. Rosie also tells us that the nursery has had great success growing some of their local plants from seed using the smoke germination technique. Margaret Guenzel is interested in propagating plants of the local Epacris impressa for the KNOX ENVIRONMENTAL SOCIEIY INDIGENOUS NURSERY. It's really great to see the current high level of interest in local plants and Indigenous Nurseries. Special thanks to new member,JOHN EMMS, from Loch in South Gippsland who has sent in the following item - Epacris sp. of Tasmania Members of the Study Group with access to The Net' may be interested in looking at the Flora species profile - Epacris. This can be found at - http://www.rfa.gov.au/cra/tas/env/ai~epac.r.html It profiles 15 Tasmanian Epacris species giving life history and population summaries covering rarely mentioned species such as E. graniticola, E. apsleyensis, E. curtisiae, E. grandis and E. libata. (It is somewhat of an update on those mentioned in Briggs fi Leigh 'Rare or Threatened Australian Plants', 1996). Those persons who like coloured pictures of Epacridaceae might like to try "The Flora of Mount Field" from the University of Tasmania at - http://info/utas/edu/au/docs/plant~science/field~botany/field/index.html.Look under Dicotyledons. DICK BURNS, former Secretary/Treasurer of the EPACRIS STUDY GROUP advises that the illustration of Epacris navicularis which featured in earlier Study Group Newsletters, and is included on page 3 here, was provided by Yvonne Menadue, who worked with Ron Crowden on the study of this genus. While many members have associated the successful cultivation of Epacris impressa with the presence of moisture in the garden, Dick reports that in his garden at Penguin, Tas. the site becomes 'bone dry' in summer. He has several forms growing including pink, red, double-flowered and 'Bega'. Dick also has a very old plant of E. longiflora, plus a form with dull-coloured flowers which originated from Earlwood in the Sydney area. BARBARA HENDERSON from Samsonvale Qld, is leader ofthe WALLUM and COASTAL HEATHLAND STUDY GROUP. Barbara writes - Our local Wallum (and montane heath) Epacris are microphylla, obtusifolia and pulchella. The first two definitely prefer moist to wet sites but the last one seems to be happy in a variety of situations. Ofthe three, I've so far tried growing E. obtusifolia, with little success up here in my hilly garden with its shaly loam - not enough wet for it. E. pulchella grows well, but doesn't flower anywhere near as prolifically as it does down on the coast in the Wallum areas. It will have either white or pink flowers, and last April at Beenvah it wasjust wonderful. Myplants so far have been "rescues'' from Sunshine Coast development sites. CHERREE DENSLEY writes that Epacris plants have proved difficult in the dark volcanic loam soil of her garden in Killarney Vic. She plans to try to concentrate on cutting-grown plants from regions with heavier soils. Do any members have suggestions for Cherree ? Cherree also sent the following in a recent letter - Epacris lanuginosa was just beautiful last year in a swampy area near Mt. Clay. It turned the area white where it grows with Melaleuca squamea and M. squarrosa, Hakea nodosa, Gahnia sieberiana and Sprengelia incarnata. The Epacris flowering is quite short, just a few weeks at the most in spring, followed by a soft pink and yellow hare over this dense swamp area, pink from the Sprengelia and yellow from the Melaleuca squarrosa. Later on in summer M. squamea will spot colour the area bright pink. It is a fascinating area, but I'm glad there are some tracks through there, as it is not the best place to wander and explore. Most vegetation is about head high and so dense you can't see where to put your feet - which is ankle to knee high water anyway. If you tripped and fell, you just might be lost forever! But even though Ihave been going through this area off and on for years it has only been in the last few that Ihave noticed this white flower blooming and actually found out that it was Epacris lanuginosa. It is almost impossible to spot when not flowering as the foliage blends in with everything else. So by my estimation it is quite a tall plant - head high anyway. Many thanks Cherree - and I'm sorry it took a couple of issues to include this item in our Newsletter. Page 3 The following is the first of the two items included in this Newsletter from overseas member, JEFF IRONS of Wirral in England. We thank Jeff sincerely for his contributions. In separate parts ofNewsletter 7 it was stated that Epacris need soil which is moist and which is acid. I wonder whether things are as simple as that. Having lost many Epacrids in my English garden Ihave come to the conclusion that they are best grown in pots, and that only 'spare' plants can be risked in the garden. My soil is acid. Ericaceae grow in it quite happily, so do a few Epacrids such as E. paludosa, Richea scopariaand Trochocarpa thymifolia. In general though, they die in late summer. A few die in winter. Though there is no proot I've concluded that at pH 5 - 5.5 mysoil is suficiently acid, and that most (Tasmanian) Epacris demand a soil no higher than pH 4.5. An indication that this may be a correct supposition comes from the Blue Mountains ofNSW.
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